Correlation Between Geometric Similarity of Ice Shapes and the Resulting Aerodynamic Performance Degradation-A Preliminary Investigation Using WIND

TITLE AND SUBTITLE:
Correlation Between Geometric Similarity of Ice Shapes and the Resulting Aerodynamic Performance Degradation-A Preliminary Investigation Using WIND

AUTHOR(S):
William B. Wright and James Chung

REPORT DATE:
December 1999

FUNDING NUMBERS:
WU-548-20-23-00
NAS3-98008

PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES):
Dynacs Engineering Company, Inc.
2001 Aerospace Parkway
Brook Park, Ohio 44142

PERFORMING ORGANIZATION REPORT NUMBER:
E-12057

SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration
John H. Glenn Research Center at Lewis Field
Cleveland, Ohio 44135-3191

REPORT TYPE AND DATES COVERED:
Final Contractor Report

SPONSORING/MONITORING AGENCY REPORT NUMBER:
NASA CR-1999-209417
AIAA-2000-0097

SUPPLEMENTARY NOTES:
Prepared for the 38th Aerospace Sciences Meeting and Exhibit sponsored by the American Institute of Aeronautics and Astronautics, Reno, Nevada, January 10-13, 2000. William B. Wright, Dynacs Engineering Company, Inc., Brook Park, Ohio 44142, and James Chung, Institute for Computational Mechanics in Propulsion, Cleveland, Ohio 44142. Project Manager, Mary Wadel, Turbomachinery and Propulsion Systems Division, NASA Glenn Research Center, organization code 5830, (216) 977-7510.

ABSTRACT:
Aerodynamic performance calculations were performed using WIND on ten experimental ice shapes and the corresponding ten ice shapes predicted by LEWICE 2.0. The resulting data for lift coefficient and drag coefficient are presented. The difference in aerodynamic results between the experimental ice shapes and the LEWICE ice shapes were compared to the quantitative difference in ice shape geometry presented in an earlier report. Correlations were generated to determine the geometric features which have the most effect on performance degradation. Results show that maximum lift and stall angle can be correlated to the upper horn angle and the leading edge minimum thickness. Drag coefficient can be correlated to the upper horn angle and the frequency-weighted average of the Fourier coefficients. Pitching moment correlated with the upper horn angle and to a much lesser extent to the upper and lower horn thicknesses

SUBJECT TERMS:
Icing

NUMBER OF PAGES:
28

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1999/CR-1999-209417.pdf
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